diff options
| -rw-r--r-- | qemu-io.c | 44 |
1 files changed, 40 insertions, 4 deletions
@@ -192,6 +192,7 @@ read_help(void) " Reads a segment of the currently open file, optionally dumping it to the\n" " standard output stream (with -v option) for subsequent inspection.\n" " -p, -- use bdrv_pread to read the file\n" +" -P, -- use a pattern to verify read data\n" " -C, -- report statistics in a machine parsable format\n" " -v, -- dump buffer to standard output\n" " -q, -- quite mode, do not show I/O statistics\n" @@ -207,8 +208,10 @@ read_f(int argc, char **argv) char *buf; int64_t offset; int count, total; + int pattern = 0; + int Pflag = 0; - while ((c = getopt(argc, argv, "Cpqv")) != EOF) { + while ((c = getopt(argc, argv, "CpP:qv")) != EOF) { switch (c) { case 'C': Cflag = 1; @@ -216,6 +219,10 @@ read_f(int argc, char **argv) case 'p': pflag = 1; break; + case 'P': + Pflag = 1; + pattern = atoi(optarg); + break; case 'q': qflag = 1; break; @@ -270,6 +277,17 @@ read_f(int argc, char **argv) return 0; } + if (Pflag) { + void* cmp_buf = malloc(count); + memset(cmp_buf, pattern, count); + if (memcmp(buf, cmp_buf, count)) { + printf("Pattern verification failed at offset %lld, " + "%d bytes\n", + (long long) offset, count); + } + free(cmp_buf); + } + if (qflag) return 0; @@ -291,7 +309,7 @@ static const cmdinfo_t read_cmd = { .cfunc = read_f, .argmin = 2, .argmax = -1, - .args = "[-aCpqv] off len", + .args = "[-aCpqv] [-P pattern ] off len", .oneline = "reads a number of bytes at a specified offset", .help = read_help, }; @@ -312,6 +330,7 @@ readv_help(void) " standard output stream (with -v option) for subsequent inspection.\n" " Uses multiple iovec buffers if more than one byte range is specified.\n" " -C, -- report statistics in a machine parsable format\n" +" -P, -- use a pattern to verify read data\n" " -v, -- dump buffer to standard output\n" " -q, -- quite mode, do not show I/O statistics\n" "\n"); @@ -328,12 +347,18 @@ readv_f(int argc, char **argv) int count = 0, total; int nr_iov, i; QEMUIOVector qiov; + int pattern = 0; + int Pflag = 0; - while ((c = getopt(argc, argv, "Cqv")) != EOF) { + while ((c = getopt(argc, argv, "CP:qv")) != EOF) { switch (c) { case 'C': Cflag = 1; break; + case 'P': + Pflag = 1; + pattern = atoi(optarg); + break; case 'q': qflag = 1; break; @@ -406,6 +431,17 @@ readv_f(int argc, char **argv) return 0; } + if (Pflag) { + void* cmp_buf = malloc(count); + memset(cmp_buf, pattern, count); + if (memcmp(buf, cmp_buf, count)) { + printf("Pattern verification failed at offset %lld, " + "%d bytes\n", + (long long) offset, count); + } + free(cmp_buf); + } + if (qflag) return 0; @@ -426,7 +462,7 @@ static const cmdinfo_t readv_cmd = { .cfunc = readv_f, .argmin = 2, .argmax = -1, - .args = "[-Cqv] off len [len..]", + .args = "[-Cqv] [-P pattern ] off len [len..]", .oneline = "reads a number of bytes at a specified offset", .help = readv_help, }; |